Power Electronics By which one of the following we can measure the reliability of a string? Factor of safety. Derating factor. String efficient. Reliability factor. Factor of safety. Derating factor. String efficient. Reliability factor. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is 140 μs. 145 μs. 130 μs. 135 μs. 140 μs. 145 μs. 130 μs. 135 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics For series connected SCR’s dynamic equalising circuit consists of series R and diode with C across R. series R and diode with C across R. R and C in series but with diode across C. R and C in series but with diode across R. series R and diode with C across R. series R and diode with C across R. R and C in series but with diode across C. R and C in series but with diode across R. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of following devices has highest di/dt and dv/dt capability? SCR. SIT. SITH. GTO. SCR. SIT. SITH. GTO. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant Transistor None of these UJT SCR Transistor None of these UJT SCR ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt? 1200 V/µs. 600 V/µs. 800 V/µs. 1000 V/µs. 1200 V/µs. 600 V/µs. 800 V/µs. 1000 V/µs. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS